Director and cast member George Clooney (L) arrives with his girlfriend Sarah Larson at the Hollywood premiere of 'Leatherheads' at the Grauman's Chinese theatre on March 31, 2008. (AFP Photo/Robyn Beck)

Director and cast member George Clooney (L) arrives with his girlfriend Sarah Larson at the Hollywood premiere of 'Leatherheads' at the Grauman's Chinese theatre on March 31, 2008. (AFP Photo/Robyn Beck)

Director and cast member George Clooney poses with co-star Renee Zellweger (L) at the premiere of 'Leatherheads' at the Grauman's Chinese theatre in Hollywood on March 31, 2008. (Reuters/Mario Anzuoni)

Director and cast member George Clooney poses with co-star Renee Zellweger (L) at the premiere of 'Leatherheads' at the Grauman's Chinese theatre in Hollywood on March 31, 2008. (Reuters/Mario Anzuoni)